EP 2090454 A2 20090819 - Control apparatus and method for four-wheel drive vehicle
Title (en)
Control apparatus and method for four-wheel drive vehicle
Title (de)
Steuervorrichtung und Verfahren für Fahrzeug mit Allradantrieb
Title (fr)
Appareil de commande et procédé pour véhicule à quatre roues motrices
Publication
Application
Priority
JP 2008033659 A 20080214
Abstract (en)
Muffled sound determining means (124) determines whether a vehicle has been placed in four-wheel drive by a driving torque distributing apparatus (54) and the running state of the vehicle is a preset muffled sound producing state in which a muffled sound may be produced. If the muffled sound determining means (124) determines that the running state of the vehicle is the muffled sound producing state, squeezing force changing means (126) changes the belt squeezing force in the belt-type transmission (18). As a result, the tension on a drive belt (48) changes, in turn changing the frequency of the string vibration of the drive belt so that it will not resonate with the natural frequency of the drive-line that transmits power to the rear wheels, thereby reducing the muffled sound.
IPC 8 full level
B60K 17/342 (2006.01); B60K 23/08 (2006.01); B60W 10/101 (2012.01); B60W 10/107 (2012.01); B60W 10/119 (2012.01); B60W 30/184 (2012.01); B60W 30/20 (2006.01); F16H 7/08 (2006.01); F16H 57/00 (2012.01); F16H 59/72 (2006.01); F16H 61/02 (2006.01); F16H 61/66 (2006.01); F16H 61/662 (2006.01); F16H 59/16 (2006.01); F16H 59/40 (2006.01); F16H 59/70 (2006.01)
CPC (source: EP)
B60K 17/342 (2013.01); B60W 10/107 (2013.01); B60W 30/20 (2013.01); F16H 57/0006 (2013.01); F16H 61/66272 (2013.01); B60W 2510/1005 (2013.01); B60W 2510/104 (2013.01); B60W 2510/107 (2013.01); B60W 2520/10 (2013.01); F16H 59/72 (2013.01)
Citation (applicant)
JP 2006220259 A 20060824 - FUJITSU TEN LTD
Designated contracting state (EPC)
DE FR GB
Designated extension state (EPC)
AL BA RS
DOCDB simple family (publication)
EP 2090454 A2 20090819; EP 2090454 A3 20110615; EP 2090454 B1 20121205; JP 2009191963 A 20090827; JP 4577372 B2 20101110
DOCDB simple family (application)
EP 09250350 A 20090212; JP 2008033659 A 20080214